How do cells in different parts of the embryo become different kinds of specialized cells which eventually become organs, then organ systems?

What is true of all organisms in the kingdoms protista, plantae, fungi, and animalia? a. they are multi-celled. b. they are photosynthetic. c. they have cells that contain membrane-bound organelles. d. they contain cells that lack membrane-bound organelles.

What best describes the dropping height of a ball that bounces back up to a height of 45 cm

Which of the following is a limitation of a clinical trial? a.)amount of random assignments b.)hospital cost c.)number of test tubes d.)amount of peer review